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by DaiPlusPlus
2375 days ago
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DI services are usually abstracted behind interfaces - and most systems allow you to replace the service interface implementation at runtime. So if you have a class that uploads files to a cloud storage provider - it would make use of IStorageProvider, and you might have AmazonS3StorageProvider, AzureBlobStorageProvider, LocalDiskStorageProvider, and for testing you would have DevNullStorageProvider. A program using DI without interfaces with different implementations is missing the other advantages of DI. |
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